AQUEOUS POLYMERIC EMULSION COMPOSITIONS AND THEIR

专利名称：AQUEOUS POLYMERIC EMULSION

COMPOSITIONS AND THEIR USE FOR THESIZING OF PAPER

发明人：DONNELLY, Simon,STOCKWELL, John,

Robert,PLONKA, John

申请号：EP00901091.9申请日：20000112公开号：EP1147258A1公开日：20011024

摘要：A method of sizing paper by applying a composition comprising an aqueousdispersion of polymeric particles of particle size up to 1 micron, preferably 80-200 nm,wherein the polymeric particles comprise a water insoluble polymer matrix, preferablyformed from styrene and 2-ethylhexyl acrylate, characterised in that an oligomer formedfrom a monomer blend comprising, (a) (meth)acrylamide, and (b) organic mercaptan or anorganic sulphone, preferably dodecyl mercaptan or dodecyl sulphone is located at thesurface of the particles. Compositions where the oligomer further comprises anethylenically unsaturated monomer comprising either a tertiary amine group or aquaternary ammonium group, preferably dimethylaminoethymethacrylate are novel.Advantages of the composition when applied to the surface of paper, include improvedwater resistance, brightness and printability properties of the treated paper.

申请人：Ciba Specialty Chemicals Water Treatments Limited

地址：Cleckheaton Road,Low Moor,P.O. Box 38 Bradford,West Yorkshire BD12 0JZ GB

国籍：GB

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